[4] He was a visiting fellow at the Reuters Institute for the Study of Journalism, Oxford University (2011–2014);[5] chairman of Which?, the consumer organisation (2010–2015); and specialist advisor to House of Lords Select Committee on the Communications Inquiry into the regulation of TV advertising (2010–2011.

[2] Most of Barwise's research at LBS comprises applied empirical studies, usually in a practical management or policy context.

He has sat on ad hoc advisory panels for many non-profit organisations such as Ethisphere, Channel 4, Market Research Society, Mencap and DCMS.

He speaks at, and chairs events on, broadcasting/media policy, customer focus and innovation, digital inclusion, and various aspects of marketing.

He carries out applied research and consulting for broadcasters and related companies, regulators and central government (Independent Review of the BBC's Digital TV Services, 2004; Evaluation of the Capability Reviews Programme, 2007; The Impact of the Commercial World on Children's Wellbeing, 2009; Incorporating Social Value into Spectrum Allocation Decisions, 2015)[2] He is also an experienced expert witness in commercial, competition and tax cases.